Gas range



Jan. 16, 1923.

s. H. KING ET AL.

LZMZMS.

GAS RANGE.

FILED 001125 |921.

2 SHEETS-SHEEI l.

2 SHEETS-SHED Z.

s H. K|NG UAL GAS RANGE.

FILED OCT 25| |921 Jan. 16, 1923.

WIMN

Patented Jan. 16, 1923.

SETE H. KING, 0F SAN FRANCISCO, AND JACOB E. TROIEL, OF BERKELEY, CALIFORNIA.

GAS RAN GE.

Application led October 25, 1921.

To all whom t may cof/wem.'

Be it known that we, Sn'rH H. KING and JACOB E. TRomL, citizens of the United States, residing at San Francisco, San Francisco Co., and Berkeley, Alameda County, respectively, in the State of California, have invented new and useful Improvements in Gas Ranges, of which the followingis a specification.

rEhe present invention relates to improvements in gas cook stoves or ranges 0f the type used in hotel and restaurant kitchens and resides in the provision of a stove or range wherein the fuel is preheated before consumption, in a novel and effective manner, a more effective heating is provided at a comparatively low fuel cost and the stove as a whole is rendered more efhcient.

An object of the invention is to provide a gas range of the character described where in provision is made for preheating the fuel and the products of combustion are distributed so as to provide a maximum` heating` action, both thru a construction and arrangement of parts and elements of a simple, inexpensive and 'compact nature.

Another object is to provide for controlling and regulating the heating of ranges in a reliable manner whereby a saving in fuel may be consummated, this being effected with special burner and stove top construction, both forming a part of the invention.

The invention possesses other advantages and features some of which, with the foregoing will be set forth at length in the following description where we shall outline in full that form of the invent-ion which we have selected for illustration in the drawings accompanying and forming a part of the present specification. In said draw` ings we have shown one form of the construction of our invention, but it is to be understood that we do not limit o-urselves to such form since the invention as expressed in the claims may be embodied in a plurality of forms.

Referring to the drawings:

Fig. 1 is a longitudinal sectional view of a range constructed in accordance with the invention.

Fig. 2 is a top plan view of the range with the top removed.

Fig. 8 is a cross sectional view taken 0n line 3-8 of Fig. 1.

F ig. at is an enlarged top plan view of the body portion of the burner.

Serial No. 510,192.

Figs. 5, 6 and 7 are top plan views of the parts of the burner.

Referring to the embodiment of the invention as exemplified in the accompanying drawing 1, 2, 3, 4i and 5 designate respec1- tively, the side, bottom and end walls of the frame or body of a gas range, the walls 1, 2, 3 and 4 preferably being thermally insulated as is customaryin the art. rlhe side walls 1 and 2 extend as at 6 below the bottom wall S so as to space the bottom from the Hoor line and said extensions 6 are provided with air intake perforations 7. The side and end walls support a cooking top 8 of any suita` ble construction.

Oven chambers 9 and 10 are provided within the range, have a dead air space 11 between them and are provided with the usual doors, not shown. These chambers are arranged so as to provide between their upper sides and the top 8 a horizontal flue or passage l2 extending for the length of the range. A yvertical '[iue or passage 13 extends from one end of the passage 12 downwardly along one side of the oven chamber 9 and at its lower end communicates with a horizontal flue or passage 14 extending between the bottom wall and lower sides of the oven chambers. One end of the passage 14k terminates well short of the end wall where between this wall and the adjacent side of the oven chamber 10 there is provided a fuel preheating chamber 15. A partition 16 extends upwardly from the bottom wall 3 to a point well below the plane of the upper sides of the oven chambers and is spaced from the side wall of the chamber 10 so as to form a vertical passage 17 leading up from the passage 14 into the chamber 15. The lower side of the chamber 15 is defined by a horizontal partition 18 `ioined to the upper edge of the partition 16 and extending towards and secured to the wall 5. The upper side of the chamber 15 is defined by a partition 19 extending from the upper side of the oven cham ber 10 across to the wall 5. Thus the parti` tions 18 and 1.9 define the chamber 15 and the walls 3 and 5 and partitions 16 and 18 define an air heating chamber 20. This latter chamber has an air intake opening 2l. formed in the bottom wall 3 and by means of a plurality of tubes 22 discharges the air thus taken in, into the passage 12, the tubes extending vertically thru the preheating chamber 15 and being heated in this way.

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The passage 17 being on one side of the chamber 2O` and the chamber 15 above the chamber 20, causes the chamber 2O to be heated and the air in said chamber 20 is therefore readily heated before discharged thru the tubes 22 where further heating of the air takes place.

A plurality of burners are supported upon one leg 25 of a fuel supply pipe 26, at the end of the range having` the wall 5, in which wall burner openings 27 are formed. The burners extend thru these openings into one end of the passage 12 and have tubular nozzle pipes 28 extending therefrom into the said passage for a short distance, the ends of said nozzle pipes terminating just short of adjacent upper corner of the oven chamber 10. A perforated transversely extending supporting member 30 in the passage 12 supports the nozzles between the upper and lower sides of the passage.

The fuel supply pipe 26 extends from a source of fuel supply not shown, thru the wall 5 into the chamber 15 and then out of said chamber where it is connected to burner supporting leg 25 thereof. Preferably the portion of the pipe which extends into and thru the chamber 15 is in U form, as shown at 32, so as' to provide for a maximum exposure of said pipe to the heat of said chamber.

To provide for controlling the heat and general operation of the range` the several burners are spaced apart and the passage 12 is divided into longitmliual sections 3?). 34 and 35 by partitions 36, and 37, a. burner discharging into each section of the said passage. Thus one or more or all burners may be used as desired, depending on the cooking operation.

l/Ve have shown a type of burner which we find well adapted for the range of this invention. Each burner comprises an open rectilinear body portion 38 from one end of which body portion a tubular externally screw threaded nipple 39 extends, whereas the other end carries a larger internally screw threaded nipple 40, the bores thru said nipples being alined. The smaller nipples 39 screws into a pipe 41 leading to the leg 25 of the fuel supply pipe and a valve 42 is mounted in the pipe 41 so as to control the fuel feed tothe burner. A, tubular nozzle 43, in part externally screw threaded, is turned in the screw threaded bore of the nipple 39 and extends across the open body portion and into the bore of the nipple 40. A cylindrical sleeve 44 having an enlarged externally threaded end 45 is turned in the base of the nipple 40 with the enlarged end innermost. The bore thru this sleeve is enlarged by being flared as at 46 at its inner end. The nozzle 43 is formed with a frustoconical discharge end 47 which end extends into the bore of the sleeve 44. The bore in the sleeve 44 is of considerably larger diameter than the nozzle 43 and this provides an annular air intake opening and passage between the nozzle and sleeve, the entrance to which passage 'is restricted or made larger by loosening anut 49 on the nozzle and nioving the end 47 of the latter relative to the flared end 46 of the bore. This provides for controlling the air intake around the nozzle 43 and permits of regulation of the burner flame. The sleeve 44, except the enlarged threaded end 45, is spaced circunr ferentially from the nipple 40 and each noz zle pipe has one end threaded and turned into the bore of said nipple, the said pipe then telescoping the sleeve 44. In this way we provide a simple, easily adjustable and readily controlled burner, which is small, compact and capable of being readily assembled and disassembled.

To provide for controlling the draft in the various passages of the range, an auxiliary iiue 48 is mounted on the back of the range, on the side wall 3, and at one end communicates with the vertical passage 13, thru an opening 48. The other end of the auxiliary flue communicates with the main outlet flue 49 which latter is mounted in a port 50 formed in the side wall 1. The port 5() opens into the chamber 15. `A damper 51 is provided in the flue 47 and when closed the auxiliary flue has no effect upon the operation of the range. The damper is open in starting the range before suiiicient heat is generated toproperly gasify the fuel. Then the damper is open the products of combustion will in part pass thru the opening 48 inte the auxiliary flue and back to the main flue 49. This will create a positive draft in the passages of the range and avoid a sluggish draft which would otherwise take place before the products of com bustion of the gaseous fuel have created a proper draft. After the-proper draft is created the damper vmay be closed.

In using the furnace one or more of the burners may be ignited depending upon the cooking operation and in the case of using one burner the vessels placed upon the top of the stove will be dis-posed over the region confined between the partitions in which said burner operates. In this way we may effect a savingin fuel in that only that portion of the top which is to be used need be heated. Otherwise the products of combustion, when only one burner is used, will pass around thru the passages 12, 13 and 14 into t-he preheating chamber 15 and out thru the flue. Regardless of the number of burners used the heat of the products of combustion thus circulatingaround the oven chambers will properly heat the oven chamber and stove top also the preheating chamber and air heating chamber as well` Heat in the preheating chamber serves to heat the fuel in the pipe passing thru said chamber, suficiently to cause the gasification of said Jfuel to insure a thorough combustion thereof at the burners. lhen the range is in operation the air intake pertorations in the eXtension 6 permit the air to be drawn in from around the lower part of the range thru the air intake opening 2l in the bottom wall and into the chamber 20. As this chamber is heated by its proximity to the lues and chamber 15, the air in the chamber 2O will be thoroughly heated and will pass upwardly thru the tubes 22 into the passage 12 and around the nozzle tubes, thus properly supporting combustion at the burner.

Vile claim:

l. A range embodying in its construction a body comprising side, end and bottom walls, oven chambers provided between the contines of said walls, a cooking top mounted upon the upper ends of the side and end walls, said walls, top andoven chambers being arranged to provide a continuous passage surrounding the chambers, an outlet flue communica-ting with the passage thru one oi the side walls, a plurality of burners projecting into said passage adjacent to one end of the range, a fuel supply pipe leading to said burners and extending thru one end wall and into a part of said passage, an air intake chamber contiguous with said passage and having an air inlet opening for receptionlot atmospheric air and tubes leading from said last named chamber thru a part of said passage to a point adjacent the discharge ends of said burners.

2. A range embodying in its construction a body comprising side, end and bottom walls, oven chambers provided between the confines of said walls, a cooking top mounted upon the upper ends of the side and end walls, said walls, top and oven chambers being arranged to provide a continuous passage surrounding said chambers, an outlet flue communicating with the passage thru one of the side walls, a plurailty of burners projecting into said passage adjacent to one end of the range, a fuel supply pipe leading` to said burners and extending thru one end wall and into Aa part of said passage, an auxiliary flue extending substantially the entire length of the range along the outer side thereof with one end communicating with the said continuous passage at one eirtremity of the upper horizontal portion of said continuous passage, the other end ot the flue being connected with the main Hue at a point spaced from the point of communication of the latter with the passage and a damper located in the first named end ot said auxiliary flue.

3. A range embodying in its construction a body made up or side, end and bottom walls, oven chambers provided between the confines of said walls, a cooking top mounted upon the upper ends of the side and end walls, said walls, top and oven chambers being arranged to provide a passage surrounding the chambers, a partition extending from one end of one oven chamber to one oil said end walls, an outlet flue communicating with the passage at a point below said partition, wall members arranged within the body in relation to one end, the side and the bottom walls to provide an air intake chamber contiguous with the passage, said bottom wall having an air intake opening leading into the air chamber, burners extending into one end of said passage and means for conducting a-ir from the auxiliary chamber to the region oi'' the passage in which the burners are located.

SETE H. KNG. JACOB E. TROIEL. 

